Digitalisation can be viewed as a major supply/technology shock affecting macroeconomic aggregates that are important for monetary policy, such as output, productivity, investment, employment and prices. This paper takes stock of developments in the digital economy and their possible impacts...

We study the implications of the creative destruction lifecycle of innovation for asset prices. We develop a general equilibrium model of endogenous firm creation and destruction where 'incremental' innovations by incumbents and 'radical' innovations by entrants drive productivity improvements....

Large incumbent firms routinely acquire startups. This may stimulate aggregate growth, as acquisitions provide an incentive for startup creation and could transfer ideas to more efficient users. However, large firms do not always implement the ideas of their acquisition targets. Moreover,...

We highlight the salient characteristics and implications of the seminal contributions in the field of vintage capital growth theory (proposed entry for the new Palgrave dictionary of economics, 2nd edition)

The aim of this paper is to account for both the short-run fluctuations and the very-long run transformations induced by technological change in analysing long-run growth patterns. The paper investigates the possible imprint left by short-run fluctuations on the long run dynamics by affecting...

The aim of this paper is to account for both the short-run fluctuations and the very-long run transformations induced by technological change in analysing long-run growth patterns. The paper investigates the possible imprint left by short-run fluctuations on the long run dynamics by affecting...

Why is GDP so much more volatile in poor countries than in rich ones? To answer this question, we propose a theory of technological diversification. Production makes use of different input varieties, which are subject to imperfectly correlated shocks. As in endogenous growth models,...

The present paper emphasizes the role of demand, income distribution, endogenous productivity reactions, and other structural changes in the slowdown of the growth rate of output and productivity that has been observed in the United States over the last four decades. In particular, it is...

Yes. We construct a measure of aggregate technology change, controlling for imperfect competition, varying utilization of capital and labor, and aggregation effects. On impact, when technology improves, input use falls sharply, and output may fall slightly. With a lag of several years, inputs...

In this note we compare the laissez-faire steady-state solution in the Howitt and Aghion (1998) model to the social optimum. The analysis offers several new insights in comparison to the welfare analysis in Aghion and Howitt (1992). We find various new distortions between private and optimal...